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Finding the Third Proportional to 71,302 and 81,670

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Solution

The third proportional to 71,302 and 81,670 is: 93,545.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,302 : 81,670 = 81,670 : x
  2. Step 2: Convert to fraction form
    71,302/81,670 = 81,670/x
  3. Step 3: Cross multiply
    71,302x = 81,670 × 81,670
  4. Step 4: Simplify right side
    71,302x = 6,669,988,900
  5. Step 5: Solve for x
    x = 6,669,988,900/71,302
  6. Step 6: Final answer
    x = 93,545.61

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.